Question

Which statement describes a concept included in the wave-mechanical model of the atom? 1. Positrons are located in shells outside the nucleus. 2. Neutrons are located in shells outside the nucleus. 3. Protons are located in orbitals outside the nucleus. 4. Electrons are located in orbitals outside the nucleus?

Answer 1

I believe it is #4 as the electrons are always outside of the nucleus while the protons and neutrons are inside